National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce
Current conditions at

Monticello, Sullivan County International Airport (KMSV)

Lat: 41.7°NLon: 74.8°WElev: 1404ft.

Mostly Cloudy

82°F

28°C

Humidity 43%
Wind Speed SW 5 mph
Barometer 29.77 in (1007.1 mb)
Dewpoint 57°F (14°C)
Visibility 10.00 mi
Heat Index82°F (28°C)
Last update 16 Apr 5:56 pm EDT
Extended Forecast for

Mongaup Valley NY

  • Tonight

    Tonight: A slight chance of showers after 1am. Mostly cloudy, with a low around 57. Southwest wind around 6 mph becoming calm in the evening. Chance of precipitation is 20%.

    Low: 57 °F

    Mostly Cloudy
    then Slight
    Chance
    Showers

  • Friday

    Friday: A slight chance of showers after 1pm. Mostly sunny, with a high near 73. Northwest wind 3 to 6 mph. Chance of precipitation is 20%.

    High: 73 °F

    Mostly Sunny
    then Slight
    Chance
    Showers

  • Friday Night

    Friday Night: Increasing clouds, with a low around 52. Calm wind.

    Low: 52 °F

    Increasing
    Clouds

  • Saturday

    Saturday: Partly sunny, with a high near 70. South wind 3 to 8 mph.

    High: 70 °F

    Partly Sunny

  • Saturday Night

    Saturday Night: Showers likely, mainly after 2am. Mostly cloudy, with a low around 39. Southeast wind around 6 mph. Chance of precipitation is 70%.

    Low: 39 °F

    Showers
    Likely

  • Sunday

    Sunday: Showers. High near 52. Chance of precipitation is 80%.

    High: 52 °F

    Showers

  • Sunday Night

    Sunday Night: Rain and snow showers likely before 11pm, then a chance of snow showers between 11pm and 2am. Partly cloudy, with a low around 27. Chance of precipitation is 60%.

    Low: 27 °F

    Rain/Snow
    Likely then
    Chance Snow
    Showers

  • Monday

    Monday: Mostly sunny, with a high near 41.

    High: 41 °F

    Mostly Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 22.

    Low: 22 °F

    Mostly Clear

Detailed Forecast

Tonight
A slight chance of showers after 1am. Mostly cloudy, with a low around 57. Southwest wind around 6 mph becoming calm in the evening. Chance of precipitation is 20%.
Friday
A slight chance of showers after 1pm. Mostly sunny, with a high near 73. Northwest wind 3 to 6 mph. Chance of precipitation is 20%.
Friday Night
Increasing clouds, with a low around 52. Calm wind.
Saturday
Partly sunny, with a high near 70. South wind 3 to 8 mph.
Saturday Night
Showers likely, mainly after 2am. Mostly cloudy, with a low around 39. Southeast wind around 6 mph. Chance of precipitation is 70%.
Sunday
Showers. High near 52. Chance of precipitation is 80%.
Sunday Night
Rain and snow showers likely before 11pm, then a chance of snow showers between 11pm and 2am. Partly cloudy, with a low around 27. Chance of precipitation is 60%.
Monday
Mostly sunny, with a high near 41.
Monday Night
Mostly clear, with a low around 22.
Tuesday
Sunny, with a high near 53.
Tuesday Night
A chance of showers. Mostly cloudy, with a low around 37. Chance of precipitation is 30%.
Wednesday
Partly sunny, with a high near 61.
Wednesday Night
Partly cloudy, with a low around 35.
Thursday
Mostly sunny, with a high near 60.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Mongaup Valley NY
 41.67°N 74.79°W (Elev. 1175 ft)
Last Update:
2:30 pm EDT Apr 16, 2026
Forecast Valid:
6pm EDT Apr 16, 2026-6pm EDT Apr 23, 2026
 
Forecast Discussion
 
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Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

Hourly Weather Forecast

National Digital Forecast Database

National Digital Forecast Database Maximum Temperature Forecast

High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation